Metalua

-- Metalua example: compile-time code generation and runtime evaluation
-- Metalua extends Lua 5.1 with compile-time metaprogramming (splices/quasi-quotes)

-- This splice executes at compile time, not runtime
-{ print "Metalua: compile stage reached" }

-- Runtime: recursive Fibonacci
local function fib(n)
    if n < 2 then return n end
    return fib(n - 1) + fib(n - 2)
end

-- Runtime: print first 12 Fibonacci numbers
print("Fibonacci sequence (first 12 terms):")
local results = {}
for i = 0, 11 do
    results[#results + 1] = fib(i)
end
print(table.concat(results, ", "))